"Open Your Heart", written by Jun Senoue and Kenichi Tokoi, originally appeared as the main theme from Sonic Adventure for the Sega Dreamcast and was featured in the vocal themes album "Songs with Attitude: Sonic Adventure Vocal Mini-album" as well as Crush 40's eponymous debut album. Being one of Crush 40's oldest and most popular songs, it appears in their compilation album "The Best of Crush 40: Super Sonic Songs" and has had various remixes and remasters over its lifetime.